### Added:
- Connection (mailer) selector for single and bulk emails resend.
- Ability to switch additional connection to the primary connection.
- Ability to trigger alert when deliverability verification process detects a hard bounce.
- Allow visibility toggle of the Amazon SES Identities through the PHP constant `WPMS_AMAZONSES_DISPLAY_IDENTITIES`.
- Filter that allows to use self website Google OAuth redirect URL.
### Changed:
- Improved plugin settings UI.
- Replaced our moment.js library with the WP Core's bundled one.
### Fixed:
- Translation strings on the Dashboard widget.
- Error when email content failed to be encoded while click link tracking injection.
- Missing "Delete Connection" link on the single additional connection page for some connections.
